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CELLULAR AUTOMATA SIMULATION ON THE EARLY STAGES OF METAL CORROSION IN MOIST ATMOSPHERIC ENVIRONMENT |
LI Lei; LI Xiaogang; XIAO Kui; DONG Chaofang |
Corrosion and Protection Center;School of Materials Science and Engineering; University of Science and Technology Beijing; Beijing 100083 |
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Abstract Atmospheric corrosion was widely occurred when metallic materials were used in natural environment. This paper presents a cellular automata model which simulates the early stage of metal corrosion in moist atmospheric environment. First, the basic principles of cellular automata are introduced, and the application of cellular automata in corrosion field is briefly summarized. Then according to the mechanism of metal corrosion in moist atmospheric environment, the cellular automata model which will simulate the electrochemical reactions and diffusion steps of metal corrosion is proposed. With a series of simulation, the optimization factors which were used to simulate the evolvement of corrosion pit appearance are established. At the same time, the concentrations of different cells in electrolyte are simulated, and the trend of the concentration curve is analyzed contrast to the lab experiment.
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Received: 28 April 2008
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Corresponding Authors:
LI Xiaogang
E-mail: lixiaogang99@263.net
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